It is very suspicious to me, and it will be to the Judge, and any jury should this go to court (which I doubt unless the Zahaus come up with some real evidence), that this upstanding, perfect, impartial family man, sees "someone acting bizarrely" on the front steps of the most famous residence in town, yet doesn't call the police to report that. He only reports it after the case breaks. Most people will find tht suspicious behaviour.
And since LE interviewed the man and then did not believe his story tells me his story changed, or he was somehow related to the Zahaus, or perhaps had posted against the Shacknais in the first few days after Rebecca's suicide - in the Coronado Patch, or one of the San Diego news sites that was running rampant with wild accusations - and they felt he had alterier motives - they do check those things so that is entirely possible.
There was something about this person that made him not credible or believed by LE. Doubt a jury will discount that like some posters here think.
Hmm, if you were biking in a new neighborhood (I assume the bike family was only visiting Coronado as they had no idea who Rebecca or Dina were), and saw someone who's a complete stranger to you "acting bizarrely", e.g., walking back and forth from front to back door, you would automatically call to report "suspicious behavior"? Really???
If we all call the cops any and every time we see someone we don't know who may or may not live in a home you happen to pass by acting in a manner that looks strange to us and "report suspicious behavior", the phones at all police precincts would be ringing off the hook! That is impractical, unreasonable and nuts.
No, the *appropriate, reasonable* thing a normal, rational person would do is:
a) you notice strange behavior in a strange neighborhood;
b) you have no idea whether that person resides in the home or not -- SO YOU DO NOT REPORT IT because hey, that person could live there and perhaps had dropped their key (or other item) so they are walking back and forth from front to backyard to search for their key/item;
c) however, you then find out in the news the next day or so that someone died a "violent suspicious death" in that home (that's now shown visually on television so you know you didn't mis-identify the home) you passed by where you had noticed the stranger and strange behavior -- SO THEN YOU REPORT IT AT THAT TIME.
Here's an analogy perhaps even you can understand. Remember George Zimmerman? Recall how he reported "suspicious behavior" of a little black kid returning home with a bag of skittles? Remember how that went down? So you would do the SAME thing as Zimmerman did? You would, like Zimmerman, report suspicious activity because a small stranger whom you believe to be acting bizarrely is walking by?
GMAB.